: Class Histogram

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Class Histogram

java.lang.Object
  |
  +--java.lang.Thread
        |
        +--Histogram

public class Histogram
extends java.lang.Thread

Histogram creates a histogram of a specified image array and returns an grey_scales*hist_height image array to represent the histogram

Author:: Bob Fisher, Tim Sharman, Nathalie Cammas

Field Summary
`int`	`hist_w`

Fields inherited from class java.lang.Thread

MAX_PRIORITY,  
MIN_PRIORITY,  
NORM_PRIORITY

Constructor Summary
`Histogram()`

Method Summary
`int[]`	`histogram(int[] src, int width, int height)` Creates a 256*256 image array for the histogram of the specified image array
`int[]`	`histogramScale(int[] src, int width, int height, double max)` Calculates the histogram and scales it.
`double`	`maximum(int[] src, int width, int height)` Calculates the maximum value in the histogram
`int`	`peak(int[] src, int width, int height)` Calculates the peak value of the histogram

Methods inherited from class java.lang.Thread

activeCount, 
checkAccess, 
countStackFrames, 
currentThread, 
destroy, 
dumpStack, 
enumerate, 
getContextClassLoader, 
getName, 
getPriority, 
getThreadGroup, 
interrupt, 
interrupted, 
isAlive, 
isDaemon, 
isInterrupted, 
join, 
join, 
join, 
resume, 
run, 
setContextClassLoader, 
setDaemon, 
setName, 
setPriority, 
sleep, 
sleep, 
start, 
stop, 
stop, 
suspend, 
toString, 
yield

Methods inherited from class java.lang.Object

clone, 
equals, 
finalize, 
getClass, 
hashCode, 
notify, 
notifyAll, 
wait, 
wait, 
wait

Field Detail

hist_w

public int hist_w

Constructor Detail

Histogram

public Histogram()

Method Detail

histogram

public int[] histogram(int[] src,
                       int width,
                       int height)

Creates a 256*256 image array for the histogram of the specified image array

Parameters:: src - Image array to be turned into a histogram; width - The width of the input image; height - The height of the input image
Returns:: An image array representing the histogram of the input image

peak

public int peak(int[] src,
                int width,
                int height)

Calculates the peak value of the histogram

Parameters:: the - image; the - width of the image; the - height of the image
Returns:: the peak value in the histogram

maximum

public double maximum(int[] src,
                      int width,
                      int height)

Calculates the maximum value in the histogram

Parameters:: the - image; the - width of the image; the - height of the image
Returns:: the maximum value in the histogram

histogramScale

public int[] histogramScale(int[] src,
                            int width,
                            int height,
                            double max)

Calculates the histogram and scales it.

Parameters:: the - image; the - width of the image; the - height of the image; the - value to set the histogram maximum
Returns:: the int array containing the histogram scaled